Ubuntu.comUB:CVE-2023-28320CVE-2023-28320
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.6 Low
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
44.8%
A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl
provides several different backends for resolving host names, selected at
build time. If it is built to use the synchronous resolver, it allows name
resolves to time-out slow operations using alarm() and siglongjmp().
When doing this, libcurl used a global buffer that was not mutex protected
and a multi-threaded application might therefore crash or otherwise
misbehave.
Notes
| Author | Note |
|---|---|
| mdeslaur | Ubuntu is not vulnerable to this issue as packages are built with the threaded resolver, not the synchronous resolver. |
Related
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.6 Low
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
44.8%